我下載一個大約ViewPager和CirclePageIndicator項目。它運作良好,在我的平板電腦和它的代碼是:如何使用ViewPager在片段
Test1Activity.java:
TestFragmentAdapter mAdapter;
ViewPager mPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//The look of this sample is set via a style in the manifest
setContentView(R.layout.simple_circles);
mAdapter = new TestFragmentAdapter(getSupportFragmentManager());
mPager = (ViewPager)findViewById(R.id.pager);
mPager.setAdapter(mAdapter);
CirclePageIndicator indicator = (CirclePageIndicator)findViewById(R.id.indicator);
indicator.setViewPager(mPager);
}
TestFragmentAdapter.java:
class TestFragmentAdapter extends FragmentPagerAdapter {
protected static final String[] CONTENT = new String[] { "Page1", "Page2", "Page3", "Page4", };
private int mCount = CONTENT.length;
public TestFragmentAdapter(FragmentManager fragmentManager) {
super(fragmentManager);
}
@Override
public Fragment getItem(int position) {
return TestFragment.newInstance(CONTENT[position % CONTENT.length]);
}
@Override
public int getCount() {
return mCount;
}
public void setCount(int count) {
if (count > 0 && count <= 10) {
mCount = count;
notifyDataSetChanged();
}
}}
TestFragment:
public final class TestFragment extends Fragment {
private static final String KEY_CONTENT = "TestFragment:Content";
public static TestFragment newInstance(String content) {
TestFragment fragment = new TestFragment();
fragment.mContent = content;
return fragment;
}
private String mContent = "???";
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if ((savedInstanceState != null) && savedInstanceState.containsKey(KEY_CONTENT)) {
mContent = savedInstanceState.getString(KEY_CONTENT);
}
TextView text = new TextView(getActivity());
text.setGravity(Gravity.CENTER);
text.setText(mContent);
text.setTextSize(20 * getResources().getDisplayMetrics().density);
text.setPadding(20, 20, 20, 20);
LinearLayout layout = new LinearLayout(getActivity());
layout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
layout.setGravity(Gravity.CENTER);
layout.addView(text);
return layout;
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putString(KEY_CONTENT, mContent);
}}
現在我想在片段中使用此ViewPager而不是活動,但我感到困惑。 TestFragmentAdapter的構造函數接受類型android.support.v4.app.FragmentManager參數,但在一個片段我只能用getFragmentManager()得到一個android.app.FragmentManager類型,因此
mAdapter = new TestFragmentAdapter(getSupportFragmentManager());
是總是錯的。 我必須在幾天內完成我的項目,那麼你能告訴我如何修改我的代碼以實現片段中的相同功能嗎?
Thx !!
[在片段的Android viewpager](的可能的複製http://stackoverflow.com/questions/33103320/android-viewpager-in-片段) – 2016-01-03 19:51:24